You can't handle strings with a single character.
Darrel's system for storing strings in code space is great but you can also put the string into EEROM for example....

A var byte
I var byte

DATA @0, "Hello World", 13, 10 ' This writes the EEROM at code load time.

For I = 0 to 15
read I,A
serout pin, mode, [A] 'Check the syntax, I don't have MCS+ open at the moment
Next I

HTH
Brian